<!doctype html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta name="viewport"
          content="width=device-width, user-scalable=no, initial-scale=1.0, maximum-scale=1.0, minimum-scale=1.0">
    <meta http-equiv="X-UA-Compatible" content="ie=edge">
    <script src="vue.js"></script>
    <title>Hello World</title>
</head>
<body>
<div id="app">
    {{ message }}
</div>
</body>
<script>
    var app = new Vue({
        el:'#app',
        data:{
            message : 'Hello World'
        }
    })
    // setTimeout(function () {
    //     app.$data.message = 'Bye World'
    // },2000)
</script>
</html>
